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Canon G7 X versus Canon T6i

The Canon PowerShot G7 X and the Canon EOS Rebel T6i (labelled Canon 750D in some countries) are two digital cameras that were announced, respectively, in September 2014 and February 2015. The G7X is a fixed lens compact, while the T6i is a DSLR. The cameras are based on an one-inch (G7X) and an APS-C (T6i) sensor. The G7X has a resolution of 20 megapixel, whereas the T6i provides 24 MP. Read on to find out how these two cameras compare with respect to their size, their sensors, their features, and their reception by expert reviewers.

Body comparison: Canon G7 X vs Canon T6i

An illustration of the physical size and weight of the Canon G7 X and the Canon T6i is provided in the side-by-side display below. Three successive views from the front, the top, and the rear are shown. All width, height and depth dimensions are rounded to the nearest millimeter. You can also toggle the display to switch to a percentage comparison if you prefer that the measures are being expressed in relative terms (in this case, the camera on the left side – the G7X – represents the basis for the calculations across all the size and weight measures).

Snapsort Canon G7 X vs Canon T6i
Compare G7X versus T6i top
Compare G7X and T6i rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon T6i is considerably larger (116 percent) than the Canon G7 X. In this context, it is worth noting that neither the G7X nor the T6i are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G7X has a lens build in, whereas the T6i is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can find an overview of optics for the T6i and their specifications in the Canon EF Lens Catalog.

Concerning battery life, the G7X gets 210 shots out of its NB-13L battery, while the T6i can take 440 images on a single charge of its LP-E17 power pack.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you want to switch the focus of the display and review another camera pair, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Canon G7 X» 4.1 in 2.4 in 1.6 in 10.7 oz 210 n Sep 2014 699- i
Canon T6i« 5.2 in 4.0 in 3.1 in 19.6 oz 440 n Feb 2015 749- i
Canon 77D« » 5.2 in 3.9 in 3.0 in 19.0 oz 600 n Feb 2017 899 i i
Canon T7i« » 5.2 in 3.9 in 3.0 in 18.8 oz 600 n Feb 2017 749 i i
Canon G7 X Mark II« » 4.2 in 2.4 in 1.7 in 11.3 oz 265 n Feb 2016 699 i i
Canon G9 X« » 3.9 in 2.3 in 1.2 in 7.4 oz 220 n Oct 2015 529- i
Canon M3« » 4.4 in 2.7 in 1.7 in 12.9 oz 250 n Feb 2015 679- i
Canon T6s« » 5.2 in 4.0 in 3.1 in 19.9 oz 440 n Feb 2015 849- i
Canon G5 X« » 4.4 in 3.0 in 1.7 in 12.5 oz 210 n Oct 2015 799 i i
Canon T5i« » 5.2 in 3.9 in 3.1 in 20.5 oz 440 n Mar 2013 649- i
Sony RX100 IV« » 4.0 in 2.3 in 1.6 in 10.5 oz 280 n Jun 2015 999- i
Sony RX100 III« » 4.0 in 2.3 in 1.6 in 10.2 oz 320 n May 2014 799- i
Sony RX100 II« » 4.0 in 2.3 in 1.5 in 9.9 oz 350 n Jun 2013 749- i

The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The G7X was launched at a lower price than the T6i, despite having a lens build in. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

 

Sensor comparison: Canon G7 X vs Canon T6i

The size of the imaging sensor is a crucial determinant of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color depth than smaller pixel-units in a sensor of the same technological generation. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Canon G7 X features an one-inch sensor and the Canon T6i an APS-C sensor. The sensor area in the T6i is 186 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.7 and 1.6. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Canon G7 X and Canon T6i sensor measures

With 24MP, the T6i offers a higher resolution than the G7X (20MP), but the T6i nevertheless has larger individual pixels (pixel pitch of 3.72μm versus 2.41μm for the G7X) due to its larger sensor. Moreover, the T6i is a somewhat more recent model (by 4 months) than the G7X, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units.

G7X versus T6i MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). The Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar image quality. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Sensor Characteristics
  Camera Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Canon G7 X» 1-inch 20.0 5472 36481080/60p23.012.755671
Canon T6i« APS-C 24.0 6000 40001080/60p22.712.091971
Canon 77D« » APS-C 24.0 6000 40001080/60p23.613.397178
Canon T7i« » APS-C 24.0 6000 40001080/60p----
Canon G7 X Mark II« » 1-inch 20.0 5472 36481080/60p----
Canon G9 X« » 1-inch 20.0 5472 36481080/60p21.512.349563
Canon M3« » APS-C 24.0 6000 40001080/30p22.811.8116972
Canon T6s« » APS-C 24.0 6000 40001080/30p22.612.091570
Canon G5 X« » 1-inch 20.0 5472 36481080/60p----
Canon T5i« » APS-C 17.9 5184 34561080/30p21.711.268161
Sony RX100 IV« » 1-inch 20.0 5472 36484K/30p22.812.659170
Sony RX100 III« » 1-inch 20.0 5472 36481080/60p22.412.349567
Sony RX100 II« » 1-inch 20.0 5472 36481080/60p22.512.448367

Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, and both provide the same movie specifications (1080/60p).

 

Feature comparison: Canon G7 X vs Canon T6i

Apart from body and sensor, cameras can and do differ across a range of features. For example, the T6i has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the G7X relies on live view and the rear LCD for framing. The following table reports on some other key feature differences and similarities of the Canon G7 X, the Canon T6i, and comparable cameras. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.

Core Features
  Camera Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec))
Build-in
Flash
(yes/no)
Build-in
Image
Stab
Canon G7 X»- n 3.0 1040 tilting Y 2000 6.5 Y Y
Canon T6i«optical n 3.0 1040 swivel Y 4000 5.0 Y n
Canon 77D« »optical Y 3.0 1040 swivel Y 4000 6.0 Y n
Canon T7i« »optical n 3.0 1040 swivel Y 4000 6.0 Y n
Canon G7 X Mark II« »- n 3.0 1040 tilting Y 2000 8.0 Y Y
Canon G9 X« »- n 3.0 1040 fixed Y 2000 6.0 Y Y
Canon M3« »- n 3.0 1040 tilting Y 4000 4.2 Y n
Canon T6s« »optical Y 3.0 1040 swivel Y 4000 5.0 Y n
Canon G5 X« »2360 n 3.0 1040 swivel Y 2000 5.9 Y Y
Canon T5i« »optical n 3.0 1040 swivel Y 4000 5.0 Y n
Sony RX100 IV« »2359 n 3.0 1228 tilting n 2000 16.0 Y Y
Sony RX100 III« »1440 n 3.0 1229 tilting n 2000 10.0 Y Y
Sony RX100 II« »- n 3.0 1229 tilting n 2000 10.0 Y Y

Both the G7X and the T6i have been discontinued, but can regularly be found used on eBay. The G7X was replaced by the Canon G7 X Mark II, while the T6i was followed by the Canon T7i.

Review summary: Canon G7 X vs Canon T6i

So what conclusions can be drawn? Which of the two cameras – the Canon G7 X or the Canon T6i – has the upper hand? Below is a summary of the relative strengths of each of the two contestants.


Arguments in favor of the Canon PowerShot G7 X:

  • More dynamic range: Captures a larger spectrum of light and dark details (0.7 EV of extra DR).
  • Faster burst: Shoots at higher frequency (6.5 vs 5 flaps/sec) to capture the decisive moment.
  • Ready to shoot: Comes with a build-in lens, while the T6i requires a separate lens.
  • More compact: Is smaller (103x60mm vs 132x101mm) and thus needs less room in the bag.
  • Less heavy: Is lighter even though it comes with a build-in lens (unlike the T6i).
  • Sharper images: Has hand-shake reducing image stabilization build-in.
  • More affordable: Was introduced at a lower price, despite coming with a build-in lens.
  • More heavily discounted: Has been on the market for longer (launched in September 2014).


Reasons to prefer the Canon EOS Rebel T6i:

  • More detail: Has more megapixels (24 vs 20MP), which boosts linear resolution by 10%.
  • Better low-light sensitivity: Can shoot in dim conditions (0.7 stops ISO advantage).
  • Easier framing: Has an optical viewfinder for image framing and settings control.
  • More flexible LCD: Has swivel screen for odd-angle shots in portrait or landscape orientation.
  • Faster shutter: Has higher mechanical shutter speed (4000/sec vs 2000/sec) to freeze action.
  • More flexible: Makes it possible to change lenses and thus to use specialty optics.
  • Longer lasting: Gets more shots (440 versus 210) out of a single battery charge.
  • More modern: Was introduced somewhat (4 months) more recently.

If the count of relative strengths (bullet points above) is taken as a measure, the match-up finishes in a tie (8 points each). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision on a new camera.

G7X 08:08 T6i

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains incomplete and does no justice, for example, to the way the G7X or the T6i handle or perform in practice. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate. This is why expert reviews are important. The following table reports the overall rankings of the cameras as published by some of the major camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). You can find the full text of the reviews by clicking on the site logo in the table header.

Review scores
  Camera cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Canon G7 X»HiRec77/1004.5/53.5/54.5/5 Sep 2014 699- i
Canon T6i«-75/1004.5/54.5/54.5/5 Feb 2015 749- i
Canon 77D« »-82/1004.5/54.5/54/5 Feb 2017 899 i i
Canon T7i« »-80/1004.5/54/54/5 Feb 2017 749 i i
Canon G7 X Mark II« »HiRec81/1004.5/54/54.5/5 Feb 2016 699 i i
Canon G9 X« »HiRec-4.5/54/54.5/5 Oct 2015 529- i
Canon M3« »rev75/1004.5/54.5/54/5 Feb 2015 679- i
Canon T6s« »Rec77/1004.5/54.5/54.5/5 Feb 2015 849- i
Canon G5 X« »HiRec78/1004.5/54/54.5/5 Oct 2015 799 i i
Canon T5i« »-76/1004.5/54.5/54.5/5 Mar 2013 649- i
Sony RX100 IV« »HiRec85/1004/54.5/54.5/5 Jun 2015 999- i
Sony RX100 III« »HiRec82/1004.5/54.5/55/5 May 2014 799- i
Sony RX100 II« »HiRec79/1004.5/55/54.5/5 Jun 2013 749- i

The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

 

Other camera comparisons

Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting. If you do not see the camera that you are looking for, please contact me, and I will try to add information on that model to the database.

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